Meeting Banner
Abstract #3700

Velocity-selective continuous arterial spin labeling

Zungho Zun1
1Weill Cornell Medicine, New York, NY, United States

Synopsis

Keywords: Arterial Spin Labelling, Arterial spin labelling

Motivation: Velocity-selective arterial spin labeling (VSASL) addresses transit delay errors of conventional ASL methods, but suffers from a lower signal-to-noise ratio (SNR) than standard pseudocontinuous ASL (PCASL).

Goal(s): To develop velocity-selective continuous ASL (VS-CASL) for improved SNR with the removed transit delay.

Approach: A delay alternating with nutation for tailored excitation (DANTE) pulse was applied immediately after global saturation to maintain the magnetization of flowing spins at a very low level until these spins decelerate below a cutoff velocity, serving as velocity-selective continuous labeling.

Results: The proposed approach of VS-CASL demonstrated a similar contrast to other ASL methods with increased SNR.

Impact: This work demonstrated a novel approach to ASL perfusion imaging, combining the advantages of VSASL and PCASL, and showing the potential to eliminate transit delay and enhance SNR.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.

Keywords